Transfer



Patented item i7, 393% HELENA. sanrm, or nnnnnnnm, rnmrsvnvnma 'rnsnsrnn No Drawing. Application. filed. Hay-28,

My invention relates to a hot iron transfer process whereby fabrics can be decorated or marked by transferring resists, discharges and certain dyestuffs, in various combinations to dyed or undyed fabrics or textile materials.

For many years printing resists on fabrics in various markings or designs has. been practiced in manufacturing establishments,

so that when the fabric is entirely dipped or covered with a dye color the resist protects the portions so marked. By. the method I shall describe, designs and markings on paper can be distributed forhome use or for use outside of theplace where they are made. These paper deslgns, etc., can be used in conjunction with the popular home package dyes, or can be used b a manufacturer desiring to mark comparatively small lots of textile materials at one time, or atleast in the absence of a regular textile printing -machine.

My invention relates to a process whereb resists, either white or colorless, or of a mu tielor design can be placed on a paper base and afterwards be transferred to fabrics by a hot iron without the aid of moisture. The process relates to the transferring of characters, markings or designs. 7 One object of my invention isto enable anyone not familiar with the rinting of textiles to obtain beautiful and useful resist efiects by simply applying a white or colorless resist hot iron transfer to the d fabric before it is subjected to a' dye bath.

Another object of this invention is toenable anyone, familiar or not with the rinting of textiles, to .obtain beautiful an useful resist effects in one or more colorsby simply applying ayhot iron transfer to the gryh-fabriebefore it is subjected to a dye Another object of this invention is to print a transfer medium on a paper base in one or more colors that when transferred to a d fabric will resist or remain fast if later subjected to hot water and washing processes whether subjected to a dye-bath or not.

' Another object of this invention is to make *a hot iron transfer for applying a chemicalfabric. v

Another object of this invention is to make so 1927. Serial No. 195,150.

resist or resists to dry fabrics to be subjected later to a dye bath.

Another. object of this invention is to make a hot iron transfer for applying a chemical discharge to dry fabrics, previous- 5e ly dyed with direct or substantive dyes, and

later applying heat and moisture to bring about the chemical discoloration of the a hot iron transfer for applying a ical resist or resists to dry fabrics.

Another object of this invention relates to a transfer medium to be first printed on a paper base and which is then capableof bein transferred to dry fabric and then softens mechanor washed outjwhen the fabric is treated with moisture or heat or both and the moisture and heat act upon the chemical or chemicals and same are fastenedon in the fibres.

Another object of this invention is to make a hot iron transfer for applying a chemical discharge and one or more colors placed in different positions on the transfer to dry fabrics, previously dyed with direct or substantiv'e dyes and later applying heat and moisture to bring about the chemical discolorization of the fabric, and to substitute the dyes ap lied and to effect their fixation upon'the fa ric. 1

In the preparation of the material for these transfer media, I use some form of unctuous or waxlike substance, such as true wax, paraffin, stearic acid, etc. I call this material wax. It must be solid atordinary tem eratures, but melt by the I refer to use stearic aci Y,

he wax is melted, and the materials to be added in as fine aistate of subdivision as possible, are intimately mixed, and I find this is conveniently accomplished by first stirring them together in a heated mixer, and then passing the mixture through aheated paint mill to thoroughly separate the particles that are suspended in the w'ax.

In cases where I wish to make resist or discharge ransfersrwithoutan admixture of dye color, incorporate in the melted wax finely powdered sodium bisulphite, zinc dust, and preferably some anthraquinone. 'lhis application of eat."-

mixture has a greyish color, so that it is vis ible upon white paper, used as a base. The amount of zinc taken is preferably considerably in excess of its chemical equivalence as it will not be entirely consumed in the reaction, and the action is facilitated by having an excess present.

The use of separately prepared .hydrosulphite compounds such as the sodium salt produces practically the same result as that here described, and the use of formaldehyde 'hydrosulphite "compounds in place. of the sim le'substances would be within the scope of t is invention,

Para formaldehyde is a powder and is converted into formaldehyde by heat, thus it is effective when combined with a powdered zinc dust and sodium bisulphite which are affected by heat and moisture which in applicants case is=.applied after the transfer has been made to the fabric.

When this composition is printed as a design, etc. upon a colorless-textile, it forms a resist so that the cloth may be dyed in an ordinary dye bath, such as one containing a direct or substantive color, and the printed portions will remain uncolored. If this resist is printed upon certain dyed fabrics, and the are then dipped or worked in hot or boiling water, the dyes will be discharged where the cloth has been printed with the discharge material. The use of a little of an alkali or alkaline salt suclf as sodium carbonate in the water is sometimes desirable.

(B) hydrosulphites, which are the product of the reaction of zinc upon bisulphites reduce so called vat'dyes to their leuco bodies. Therefore, if vat dyes are intimately mixed or ground into the composition (A) different results maybe obtained. =Transfer sheets printed with such mixture may be used upon certain dyed materials with the result that k a finely divided salt of hydrosulphurous acid.

2. A transfer sheet comprising a paper base and a design thereon, composed of a moderately fusible menstrum, practically insoluble in water, having incorporated therein a mixture of zinc dust and powdered sodium bisulphlte containing zinc in excess of chemical equlvalence. i

3. A transfer sheet comprising a paper base and a design thereon, composed of stearic acid, having incorporated'therein a mixture of zinc dust and powdered sodium bisulphite containing zinc in excess of chemical equivalence and a small quantity of powdered paraformaldehyde.

4. A transfer sheet comprising a paper base and a design thereon, composed of wax having incorporated therein a mixture of zinc dust and powdered sodium bisulphite containing zinc for chemical equivalence and a small quantity of powdered paraformaldehyde and a finely powdered vat dyestuff.

5. Atransfer sheet comprising a base and a transferable medium thereon in the form of a design, said medium containing substances adapted to render dye-resisting and dye-discharging those parts of a fabric to which the design is transferred.

6. A transfer sheet comprising a base and a transferable medium thereon in the form of a design, said medium containing substances adapted to render dye-resisting and dye-discharging-those parts of a fabric to which the design is transferred, the dyeresisting portion of the medium being a thermo-plastic, water-repellent substance.

7. A transfer sheet comprising a base, and a transferable medium thereon in the form of a design, said medium including a substance to render dye discharging those parts of a fabric'to which the design is transferred, a dye to dye the discharged portions of the fabric and a thermo-plastic vehicle for the discharge substances and dye.

v 8. A transfer sheet to be employed in connection with the ornamentation or marking of fabrics, comprising a base and a transferable medium thereon in the form of a design, said medium containing a thermoplastic, water-repellant substance to render dye resisting those parts of the fabric to which the design is transferred and a dye incorporated in said substance.

9. A transfer sheet to be employed in connection with the ornamentation or marking of fabrics. comprising a. base and a transferable medium thereon in the form of a design, said medium containing stearic acid in which is incorporated a dye-discharging agent and a vat dye.

10. A transfer sheet to be employed in connection with the ornamentation or marking of fabrics, comprising a base and a transferable medium thereon in the form of a design, said medium containing a thermoplastic, water-repellant substance having incorporated therein a dye-discharging agent whereby the dye-discharging agent can be transferred and subsequently activated.

11. A transfer sheet to be employed in connection with the ornamentation or marking of fabrics, comprising abase and a transferable medium thereon in the form of a design, said medium containing a stearic acid in which is incorporated a finely divided salt of hydrosulfurous acid.

12. A transfer sheet'to be employed in com nection with the ornamentation or marln'ng of fabrics, comprising a base-and a'transferable medium thereon in the form of a 5 design, said medium containing stearic acid in which is incorporated a dye adapted to be transferred to the fabric and thereafter wet to dye the ,iabric.

13. A transfersheet to be employed in conto nection with the ornamentation or marking of fabrics, comprising a base and a transferable medium thereon in the form of a design, said medium containing stearic acid 'a vat dye, sodium bisulfite and an excess mi 1 zinc dust.

, In testimony whereof, I have hereunto signed my name, at Philadelphia, in the State of Pennsylvania, this 26th day of May, 1927. HELENA S. SADTLER. 2d 

